Justus webster



(No Model.)

J. WEBSTER.

LINT MAKING MACHINE.

No. 321,409. Patented June 30, 1885..

FL 2. WITNE SSESII CTl'LQ'S'. fin ding 77 i NITED "rnrrs Permit Orrrcn.

JUSTUS XYEBSTER, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO GROBVENO it & RICHARDS, OF SAME PLACE.

LlNT-MAKING MACHlNE.

QPISCIFICATIGN forming part of Letters Patent No. 321, i09, Cate-1 un-2 30, 1885.

Appication filed Sept: niber 10, 1884. (No model.)

To aZZ whom it may concern:

Be it known that I, J USTUS Wnnsrnn, of Boston, in the county of Suffolk and State of Massachusetts,haveinvented certain Improvements in Lint Machines, of which the following is a specification.

This invention relates to that class of lintmaking machines in which a reciprocating scraping-knife is employed, which, when moving in one direction, scrapes over the surface of a web or piece of cloth held on a bed under it and raises or pulls out portions of the fibers at one side of the fabric, means being employed to separate the knife from the fabric during its return or backward movement.

The invention has for its object to provide certain improvements in the mechanism for operating the knife and bed; and to this end the invention consists in the improvements which I will now proceed to describe and claim.

Of the accompanying drawings, forming a part of this specification, Figure 1 represents a perspective view of my improved machine. Fig. 2 represents a transverse vertical section of a portion of the machine on line 3 y. Fig. 3, looking toward the left'hand end in Fig; 1. Fig. 8 represents a section on line a" :r, Fig. 2.

The same letters of reference indicate the same parts in all the figures.

In the drawings, a represents the support ing-frame of the machine. 1) represents the scraping-knife,which is secured to an oscillat ing frame composed of a cross-bar, 2, and two arms, 3 3, hung so as to oscillate on a rod or bar, 4, the ends of which-rest removably in slots or bearings 6 6 in the frame a. a represents the supporting-bed on which the fabric rests while being scraped. Said bed is provided with a covering of firm leather or other suitable material on its cloth supporting surface, and is provided at its ends with arms 7 7 thelower ends of which are pivoted at 8 to two levers, dd. These levers are pivoted at 9 to the frame a, and are connected at their swinging ends by rods 6 with arms f f, through which pass cranks g g on a driving-shaft, g, journalcd in the frame a. The rods 6 e are pivotally connected at their opposite ends to the levers cl (Z and arms f f. The arms f f are connected with the arms 3 3 of the knife-frame by means of pivot-pins 'i i, (one of which is shown in Fig. 3,) said pivots entering vertical slots j in the upper ends of the arms 7 on the bed 0, the connection afforded by said pins and slots causing the knife and bed to reciprocate toether laterally, but permitting the bed to rise and fall independently of the knife, as hereinafter described.

75 70 represent levers pivoted at Z Z to the frame a, and hearing at their outer ends on the bar a of the knife-frame.

m m represent springs secured to the outer ends of the levers it it and to the bed-supportinglevers d (I. Said springs hold the bed upwardly and causes itto press the fabric against the knife during the scraping operation and allow the bed to recede from the knife to release the fabric, as hereinafter described.

The crank-shaft g is driven by a belt or otherwise, and has at one end a pinion, a, which communicates motion through a train ofgearing (shown in Fig. l) to one of the arbors of a pair of rubber-covered feedrolls, o o, be tween which the fabric passes on its way to the scrupingknife. Said rolls are geared togcther, so that both are positively rotated and caused to feed the fabric forward at asuitable rate.

1) represents afixed bed, over which the fabric passes between the rolls andthe bed a; and q representsapressure-bar, hearing by its own weight on the fabric over the bed 1), to keep the fabric smooth and free from wrinkles.

The rotation of the crank-shaft 9 causes the cranks g g to reciprocate the arms 1 f, thus oscillating the knife-supporting frame and knife, the movement thus imparted to the knife being substantially horizontal. The engagement of the arms 7 7 of the bed 0, by means of the slotsj and pins 5-, as above described, causes the bed to reciprocate with the knife laterally, while the connection of the arms ff with the bed-supporting levers d d, by means of the rods 0 0, causes said levers d cl to oscillate vertically, and thus alternately raise and lower the bed 0 while it is being moved horizontally with the knife. The vertical movements of the bed are so timed that the bed is raised and caused by the springs m to press the fabric against the knife with the desired degree of pressure while theknife and bed are moving forward or away from the feed-rolls,

and lowered and separated from the knife while the knife and bed are moving toward the feed-rolls. The fabric is therefore alternately grasped and released by the knife and bed, and is scraped by the knife while thus grasped. The positively-rotated feed-rolls hold the fabric so that the scraping movement of the knife cannot pull it along, the feed movement of the fabric being slower than the scraping movement of the knife.

The springs m m may be detached from the levers k k, which hold down the oscillating knife-frame, said springs having rods at their upper ends which are inserted in slots in the levers k k, and have thumb nuts t bearing on the upper sides of said levers. When the springs are detached, the levers It may be thrown back and the knife-frame removed from the slots 6 6 and turned to expose the edge of the knife,-so that the knife can be readily sharpened. The degree of pressure imparted by the springs m may be regulated by turning the nuts t I claim- 1. In a-lint-machine, the combination of the pivoted knife-frame and its knife, the vertically and laterally movable supportingbed under the knife, the crank-shaft, and inter mediate mechanism, substantially as described, whereby the knife is rcciprocated laterally and the bed is reciprocated both laterally and vertically, whereby the laterally-reciprocating knife and bed are caused to alternately grasp and release the fabric, as set forth.

2. In a lint-machine, the combination of the knife, the oscillating frame supporting the knife, the vertically-movable supporting-bed oscillated by a connection with the knifeframe, and mechanism, substantially as described, whereby the knife-frame is reciprocated horizontally and the su pportin g-bed vertieally, as set forth.

3. In alint-machine, the combination of the supporting-bed, mechanism, substantially as described, for moving said bed both laterally and vertically, the pivoted knife-supporting frame and mechanism for reciprocating said knife-frame, and the springs arranged to draw the bed upwardly toward the knife, as set forth.

4:. The combination of the pivoted oscillating knife-frame, the arms 7c is, bearing upon said frame, the springs m m,holding up the bed, the bed 0, having slotted arms engaged with pins on the knife-frame, the levers d d, supporting said bed, the crank-shaft g, and connecting devices, substantially as described, whereby the movements of the cranks on the crank-shaft are communicated to the knifeframe and the bed-supporting levers d d, as set forth.

5. The combination of the pivoted knifeframe, the bed 0, having slotted arms 7, en-- gaged with pins t on the knife-frame, the pivoted levers dd, supporting the bed, the crank shaft 9, and the rods 6 e and armsff, whereby the movements of the cranks on the crank shaft are communicated to the levers d d and the knife-frame, as set forth.

6. In a lint-machine, the combination of the oscillating knife and bed, the crank-shaft and intermediate mechanism, substantially as described, whereby the knife and bed are reciprocated and caused to alternately grasp and release the fabric, the elastic surfaced feedrolls connected by gears, and a train of gear ing connecting one of the arbors of said rolls with the crank-shaft, as set forth.

In testimony whereof Ihave signed my name to this specification, in the presence of two subscribing witnesses, this 6th day of September,

JUSTUS \VEBSTER. \Vitnesses:

C. F. BROWN, A. L. XVHITE. 

